Respuestas
Al resolver las operaciones entre polinomios se obtiene:
a) f(x) + g(x) = 2x² + 4x
b) h(x) + f(x) = (2x³- 3x² - x + 1)/(x-2)
c) g(x) · f(x) = 6x³ + x² + 2x - 1
d) h(x) · g(x) = (9x-3)/(x-2)
F(x)*G(x) = (2x²- 4x + x - 2)/12
F(x)/G(x) = (8x+4)/(3x-6)
Explicación paso a paso:
Datos;
- f(x) = 2x² + x + 1
- g(x) = 3x - 1
- h(x) = 3/(x-2)
Hallar:
a) f(x) + g(x)
= 2x² + x + 1 + 3x - 1
= 2x² + 4x
b) h(x) + f(x)
= 3/(x-2) + 2x² + x + 1
= [3 + 2x²(x-2) + x(x-2) + (x-2)]/(x-2)
= (3 + 2x³ - 4x² + x²-2x + x -2)/(x-2)
= (2x³- 3x² - x + 1)/(x-2)
c) g(x) · f(x)
= (3x-1)(2x² + x + 1)
= 6x³ + 3x² + 3x -2x² - x - 1
= 6x³ + x² + 2x - 1
d) h(x) · g(x)
= [3/(x-2)](3x-1)
= (9x-3)/(x-2)
Datos;
- F(x) = (2x+1)/3
- G(x) = (x-2)/4
F(x)*G(x)
= [(2x+1)/3][(x-2)/4]
= (2x+1)(x-2)/12
= (2x²- 4x + x - 2)/12
F(x)/G(x)
= [(2x+1)/3]÷[(x-2)/4]
= [4(2x+1)] / [3(x-2)]
= (8x+4)/(3x-6)
Vamos a resolver las operaciones a partir de los polinomio indicados
Para resolver las operaciones debes recordar la ley de suma y multiplicación de signos.
¿Cual sera el polinomio resultante?
- a) f(x) + g(x)
f(x) = 2x^2 + x + 1
g(x) = 3x - 1
Vamos a sumar las dos funciones
2x^2 + x + 1 + 3x - 1
= 2x^2 + 4x
- b) h(x) + f(x)
f(x) = 2x^2 + x + 1
h(x) = 3/(x-2)
Sumamos los polinomios
3/(x-2) + (2x^2 + x + 1)
= [3 + 2x^2 * (x-2) + x *(x-2) + 1 * (x-2)]/(x-2)
= (3 + 2x^3 - 4x^2 + x^2 - 2x + x -2)/(x-2)
= (2x^3 - 3x^2 - x + 1)/(x-2)
- c) g(x) · f(x)
f(x) = 2x^2 + x + 1
g(x) = 3x - 1
Multiplicamos los polinomios
(3x-1)(2x^2 + x + 1)
= 6x^3 + 3x^2 + 3x - 2x^2 - x - 1
= 6x^3 + x^2 + 2x - 1
- d) h(x) · g(x)
h(x) = 3/(x-2)
g(x) = 3x - 1
Multiplicamos ambos polinomios
{3/(x-2)} * (3x-1)
= 3*(3x-1) / (x-2)
= (9x-3)/(x-2)
- F(x)*G(x)
F(x) = (2x+1)/3
G(x) = (x-2)/4
Multiplicamos los dos polinomios
[(2x+1) /3] * [(x-2) /4]
= (2x+1)(x-2) / (2 *4)
= (2x^2- 4x + x - 2)/12
- F(x) / G(x)
F(x) = (2x+1)/3
G(x) = (x-2)/4
Dividimos polinomios (recordad división de fracciones)
[(2x + 1) /3] / [(x-2)/4]
= [4(2x+1)] / [3(x-2)]
= (8x+4)/(3x-6)
Si quieres saber mas sobre polinomios
https://brainly.lat/tarea/12118775